function _remove_duplicates_get_field_common_name in Remove Duplicates 7

Get the field common name used in node objects.

Parameters

string $node_field_machine_name: The {field} used to group nodes and therefore create sets of duplicate nodes.

Return value

string A field name to use with extracted db records

4 calls to _remove_duplicates_get_field_common_name()

_remove_duplicates_get_duplicate_node_groups in ./remove_duplicates.module

Get all duplicate node grouped according to selected field.

_remove_duplicates_get_list_output in ./remove_duplicates.module

Get a list themed output (Legacy output).

_remove_duplicates_get_tableselect_output in ./remove_duplicates.module

Get a tableselect data output.

_remove_duplicates_get_table_output in ./remove_duplicates.module

Get a table themed output (Legacy output).

File

./remove_duplicates.module, line 637

Remove duplicate nodes according to node fields or Custom fields.

Code

function _remove_duplicates_get_field_common_name($node_field_machine_name) {
  if (in_array(strtolower($node_field_machine_name), array(
    'title',
  ))) {

    // Basic field.
    $field = $node_field_machine_name;
  }
  else {

    // Custom field.
    $field_info = field_info_field($node_field_machine_name);
    if (!empty($field_info['storage']['details']['sql']['FIELD_LOAD_CURRENT'])) {
      $table = key($field_info['storage']['details']['sql']['FIELD_LOAD_CURRENT']);
      $field = current($field_info['storage']['details']['sql']['FIELD_LOAD_CURRENT'][$table]);
      if (!(db_table_exists($table) && db_field_exists($table, $field))) {
        return NULL;
      }
    }
    else {
      return NULL;
    }
  }
  return $field;
}